Investments, Part III (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of investments aggregated by industry [Abstract]
Carrying Value	$ 214,226	$ 246,892
Amortized Cost	209,312	216,642
Unrealized Gains (Losses)	4,914	30,250
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	98,950	13,516
12 months or longer	2,884	1,600
Total	101,834	15,116
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	5,020	189
12 months or longer	116	400
Total	5,136	589
U.S. Treasury securities and obligations of U.S. Government agencies and authorities [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	12,024	27,512
Amortized Cost	11,364	22,894
Unrealized Gains (Losses)	660	4,618
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	3,235
12 months or longer	0
Total	3,235
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	40
12 months or longer	0
Total	40
Obligations of states and political subdivisions [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	11,084	17,761
Amortized Cost	10,278	15,247
Unrealized Gains (Losses)	806	2,514
Utilities and telecom [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	18,516	19,219
Amortized Cost	16,648	15,757
Unrealized Gains (Losses)	1,868	3,462
Financial services [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	54,820	56,077
Amortized Cost	54,069	51,702
Unrealized Gains (Losses)	751	4,375
Other business - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	67,805	66,875
Amortized Cost	69,115	59,628
Unrealized Gains (Losses)	(1,310)	7,247
Other consumer - diversified [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	45,726	55,269
Amortized Cost	43,587	47,235
Unrealized Gains (Losses)	2,139	8,034
Other Investment [Member]
Schedule of investments aggregated by industry [Abstract]
Carrying Value	4,251	4,179
Amortized Cost	4,251	4,179
Unrealized Gains (Losses)	0	0
Corporate securities [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	90,486	8,806
12 months or longer	1,924	1,600
Total	92,410	10,406
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	4,480	147
12 months or longer	76	400
Total	4,556	547
Redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	1,416	1,216
12 months or longer	0	0
Total	1,416	1,216
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	30	3
12 months or longer	0	0
Total	30	3
Common and non-redeemable preferred stocks [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	3,813	3,494
12 months or longer	960	0
Total	4,773	3,494
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses [Abstract]
Less than 12 months	470	39
12 months or longer	40	0
Total	$ 510	$ 39